enhance: make sure protoc-gen-go v2 will be used to generate pb msg

Signed-off-by: Wei Liu <[email protected]>

Makefile

@@ -3,6 +3,7 @@ PWD 	:= $(shell pwd)
 GOPATH 	:= $(shell $(GO) env GOPATH)
 PROTOC	:= $(shell which protoc)
 PROTOC_VER := $(shell protoc --version)
+PROTOC_GEN_GO := $(shell which protoc-gen-go)
 
 all: generate-proto
 
@@ -11,6 +12,8 @@ build:
 
 generate-proto: export protoc:=${PWD}/cmake-build/protobuf/protobuf-build/protoc
 generate-proto: build
+	@echo "Generate proto files"
+	@echo "Clean old version protoc-gen-go $(PROTOC_GEN_GO)" && rm -f $(PROTOC_GEN_GO)
 	@which protoc-gen-go 1>/dev/null || (echo "Installing protoc-gen-go" && go install google.golang.org/protobuf/cmd/[email protected])
 	@which protoc-gen-go-grpc 1>/dev/null || (echo "Installing protoc-gen-go-grpc" && go install google.golang.org/grpc/cmd/[email protected])
 	@(env bash $(PWD)/scripts/proto_gen_go.sh)